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Modulation Basics

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Modulation Basics

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Modulating the output power of a laser diode can happen in two ways: by changing the signal input/driving current or by alternating the continuous wave output after the light is generated. In laser modulation, the current or voltage varies with time to modulate the output signal from the laser. Direct Modulation is when the current, before reaching the laser diode, is modified with the desired signal for the application.

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